Promising efficiency enhancement in cobalt redox couple-based back-illuminated dye-sensitized solar cells with titanium foil substrate

Myoung Kim; Ho Gyeong Yun; Lee Woon Jang; Dae Woo Jeon; Man Gu Kang; Jeong Hun Yoon; Ju Mi Kim; Jong Hyeok Park; In-Hwan Lee; Jeum Jong Kim

doi:10.1016/j.jpowsour.2014.12.057

Promising efficiency enhancement in cobalt redox couple-based back-illuminated dye-sensitized solar cells with titanium foil substrate

Myoung Kim, Ho Gyeong Yun, Lee Woon Jang, Dae Woo Jeon, Man Gu Kang, Jeong Hun Yoon, Ju Mi Kim, Jong Hyeok Park, In-Hwan Lee, Jeum Jong Kim

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

We demonstrate that a [Co(bpy)₃]^2+/3+ (PF₆)_2/3 redox couple is an effective strategy for cost-effective and highly efficient dye-sensitized solar cells (DSSCs). Their high transmittance and large complex size make cobalt redox couples advantageous in back-illuminated devices. Furthermore, the use of thin TiO₂ films, together with the naturally formed blocking layer at the outermost surface of Ti substrate, effectively alleviate the drawbacks of cobalt electrolyte. By virtue of these simultaneous effects, we achieve a highly promising power conversion efficiency of 7.12%.

Original language	English
Pages (from-to)	32-37
Number of pages	6
Journal	Journal of Power Sources
Volume	278
DOIs	https://doi.org/10.1016/j.jpowsour.2014.12.057
Publication status	Published - 2015 Mar 15
Externally published	Yes

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Keywords

Back illumination
Cobalt electrolyte
Dye-sensitized solar cells (DSSCs)
Metal foil
Organic dye

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Cite this

Kim, M., Yun, H. G., Jang, L. W., Jeon, D. W., Kang, M. G., Yoon, J. H., ... Kim, J. J. (2015). Promising efficiency enhancement in cobalt redox couple-based back-illuminated dye-sensitized solar cells with titanium foil substrate. Journal of Power Sources, 278, 32-37. https://doi.org/10.1016/j.jpowsour.2014.12.057

Promising efficiency enhancement in cobalt redox couple-based back-illuminated dye-sensitized solar cells with titanium foil substrate. / Kim, Myoung; Yun, Ho Gyeong; Jang, Lee Woon; Jeon, Dae Woo; Kang, Man Gu; Yoon, Jeong Hun; Kim, Ju Mi; Park, Jong Hyeok; Lee, In-Hwan; Kim, Jeum Jong.

In: Journal of Power Sources, Vol. 278, 15.03.2015, p. 32-37.

Research output: Contribution to journal › Article

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abstract = "We demonstrate that a [Co(bpy)3]2+/3+ (PF6)2/3 redox couple is an effective strategy for cost-effective and highly efficient dye-sensitized solar cells (DSSCs). Their high transmittance and large complex size make cobalt redox couples advantageous in back-illuminated devices. Furthermore, the use of thin TiO2 films, together with the naturally formed blocking layer at the outermost surface of Ti substrate, effectively alleviate the drawbacks of cobalt electrolyte. By virtue of these simultaneous effects, we achieve a highly promising power conversion efficiency of 7.12{\%}.",

keywords = "Back illumination, Cobalt electrolyte, Dye-sensitized solar cells (DSSCs), Metal foil, Organic dye",

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AB - We demonstrate that a [Co(bpy)3]2+/3+ (PF6)2/3 redox couple is an effective strategy for cost-effective and highly efficient dye-sensitized solar cells (DSSCs). Their high transmittance and large complex size make cobalt redox couples advantageous in back-illuminated devices. Furthermore, the use of thin TiO2 films, together with the naturally formed blocking layer at the outermost surface of Ti substrate, effectively alleviate the drawbacks of cobalt electrolyte. By virtue of these simultaneous effects, we achieve a highly promising power conversion efficiency of 7.12%.

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Access to Document

10.1016/j.jpowsour.2014.12.057